102020864 has 36 divisors (see below), whose sum is σ = 222162360. Its totient is φ = 46371840.

The previous prime is 102020819. The next prime is 102020873. The reversal of 102020864 is 468020201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15299 + ... + 20930.

Almost surely, 2^102020864 is an apocalyptic number.

It is an amenable number.

102020864 is an abundant number, since it is smaller than the sum of its proper divisors (120141496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102020864 is an equidigital number, since it uses as much as digits as its factorization.

102020864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36256 (or 36242 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 102020864 is about 10100.5378074635. The cubic root of 102020864 is about 467.2647280057.

The spelling of 102020864 in words is "one hundred two million, twenty thousand, eight hundred sixty-four".